| ... | ... | @@ -1073,7 +1073,7 @@ test "std.math.log2_int_ceil" { |
| 1073 | 1073 | ///Cast a value to a different type. If the value doesn't fit in, or can't be perfectly represented by, |
| 1074 | 1074 | ///the new type, it will be converted to the closest possible representation. |
| 1075 | 1075 | pub fn lossyCast(comptime T: type, value: anytype) T { |
| 1076 | | switch(@typeInfo(T)) { |
| 1076 | switch (@typeInfo(T)) { |
| 1077 | 1077 | .Float => { |
| 1078 | 1078 | switch (@typeInfo(@TypeOf(value))) { |
| 1079 | 1079 | .Int => return @intToFloat(T, value), |
| ... | ... | @@ -1084,16 +1084,24 @@ pub fn lossyCast(comptime T: type, value: anytype) T { |
| 1084 | 1084 | } |
| 1085 | 1085 | }, |
| 1086 | 1086 | .Int => { |
| 1087 | | switch(@typeInfo(@TypeOf(value))) { |
| 1087 | switch (@typeInfo(@TypeOf(value))) { |
| 1088 | 1088 | .Int, .ComptimeInt => { |
| 1089 | | if (value > maxInt(T)) { return @as(T, maxInt(T)); } |
| 1090 | | else if (value < minInt(T)) { return @as(T, minInt(T)); } |
| 1091 | | else { return @intCast(T, value); } |
| 1089 | if (value > maxInt(T)) { |
| 1090 | return @as(T, maxInt(T)); |
| 1091 | } else if (value < minInt(T)) { |
| 1092 | return @as(T, minInt(T)); |
| 1093 | } else { |
| 1094 | return @intCast(T, value); |
| 1095 | } |
| 1092 | 1096 | }, |
| 1093 | 1097 | .Float, .ComptimeFloat => { |
| 1094 | | if (value > maxInt(T)) { return @as(T, maxInt(T)); } |
| 1095 | | else if (value < minInt(T)) { return @as(T, minInt(T)); } |
| 1096 | | else { return @floatToInt(T, value); } |
| 1098 | if (value > maxInt(T)) { |
| 1099 | return @as(T, maxInt(T)); |
| 1100 | } else if (value < minInt(T)) { |
| 1101 | return @as(T, minInt(T)); |
| 1102 | } else { |
| 1103 | return @floatToInt(T, value); |
| 1104 | } |
| 1097 | 1105 | }, |
| 1098 | 1106 | else => @compileError("bad type"), |
| 1099 | 1107 | } |
Andrew Kelley <andrew@ziglang.org> 2021-01-10 19:04:10-07:00
lib